EP 0024140 A1 19810225 - RMS converter.
Title (en)
RMS converter.
Title (de)
Umwandler für den quadratischen Mittelwert.
Title (fr)
Convertisseur des valeurs moyennes quadratiques.
Publication
Application
Priority
US 6569179 A 19790810
Abstract (en)
[origin: US4375038A] A circuit for measuring the root-mean-square (RMS) value of an electrical signal. The output may be linear or logarithmic. The circuit uses devices with logarithmic voltage/ current characteristics (usually transistors), and allows the logarithmic devices to be connected directly together without intervening operational amplifiers. In its simplest form, the invention consists of a rectifier circuit, four transistors and a capacitor.
IPC 1-7
IPC 8 full level
G01R 19/02 (2006.01)
CPC (source: EP US)
G01R 19/02 (2013.01 - EP US)
Citation (search report)
- DE 2235944 A1 19730201 - WESTINGHOUSE ELECTRIC CORP
- DE 2424760 A1 19741212 - RCA CORP
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0024140 A1 19810225; EP 0024140 B1 19851211; DE 3071286 D1 19860123; US 4375038 A 19830222
DOCDB simple family (application)
EP 80302584 A 19800729; DE 3071286 T 19800729; US 6569179 A 19790810